Bovine extracts are cow-derived products used in vaccine manufacture. Cow products used include Amino acids Glycerol, Detergents, Gelatin, Enzymes, Blood. Cow tallow derivatives used in vaccine manufacture include glycerol. Gelatin and some amino acids come from cow bones. Cow skeletal muscle is used to prepare certain complex vaccine media. Many difficult to grow microorganisms required the addition of serum from blood
